Transfer mechanism



Nov. 27, 1951 M. M. KlPFER 2,576,402

TRANSFER MECHANISM Filed Aug. 9, 1947 3 Sheets-Sheet 1 lNl ENTOR.

- Max /7. KIPFER ATTORNE Nov. 27, 1951 KlPFER 2,576,402

TRANSFER MECHANISM Filed Aug. 9, 1947 s Sheets-Sheet 2 INVEN'I'OR.

BY W/ZZMg ATTORNEY Nov. 27, 1951 M, lPFER 2,576,402

TRANSFER MECHANISM 3 Sheets-Sheet 3 Filed Aug. 9, 1947 54 I0 I 58 i 6ATTORNEY Hub 48, arm 49 and cone 5!] may be made I separately andsecured together as by peening, r

welding, upsetting, etc.

The delivery tube 24 is supported by the frame- 8 with its upper endextending within the bed 1 below and to the side of the center line ofthe slide 25, the centers ofthe delivery tube entrance and of the femaledie coinciding with the extremes of an arc centered at shaft 46 andequal in degrees to theicircumferential extent of slot 44 in cam 43.It-will be understood that an oscillatable member other than thecylindrical cam shown may be used and the same result achieved bychanging the formof the cam slot or relocating the delivery tuber An airline 52 is positioned with an aperture '53 adjacent its closed end inline with the open end of tube 24.

The male pleating die 19, mounted in a housing 54 bolted toan extensionof thebed 1, carries the shearing edge 55 and includes-a stationarymandrel'56 and an annulus; 51 carried on rods 58, 59 which are heldyieldably in the position shown in Fig. 6 by suitable means such assprings. Both the annulus and the mandrel are grooved as shown atGll. Astripper plate 6! is mounted in frontof the male die.

The female die H carries an annulus 62 having a shearing edge 63. Themain die portion 64 has grooves 65 complementary to the grooves 69. Thecenter of the. die is formedby an ejector 66 sliding in sleeve 51 andcarrying pin 68 extending through slots 69 in said sleeve 61,. Springstend normally to hold the ejector 66 in' retracted position, theadvanced position shown in Fig.5 beingthe result of action of theknockout assembly, as will bedescribed. .The operation of the improvedapparatus will be readily understood. With the reciprocating assemblyretracted, astrip of foil from a roll (not shown) is fed behind thestripper plate 6!, z

or between housing 54 and plate El as viewed in Fig. 6. The roller 26 isthen in the position shown in Fig. 5 and as the reciprocating as semblybegins its. forward movement the roller bears upon the lowerwall of. theslot 44 turning the cam. 43 counterclockwise as viewed in Fig. 4 andswinging arm 49 until cone 59 is in linewith the open end of tube 24,.and between said open end and aperture 53. Continued move-. ment of thereciprocating assembly "carries the shearing edge 63 past; the stripperplate 6| so that this edge cooperates with shearing edge 55 to, cut around blank from thefoil strip. Asthe annulus 5,1 is moved against theyielding support for rods 58, 59 and the mandrel 56 remains stationary,the ejector 66 being retracted,- the male and female dies form a pleatedcup shaped-blank. On retraction of the reciprocat ing mechanism, the'roller 26 travels in the straight portion of slot 44 until the dies arecompletely disengaged. Approaching the end of the retracting movementthe roller bears against the upper wall of slot 44 and turns the "camclockwise'as .viewed in Fig. 4, swinging arm =4 9- until;the cone 5fl is'in"-position'between the 4 male and female dies. At that time air isadmitted to cylinder 39 projecting piston 49 against the tie rod 38 andswinging levers 36 to bring their free ends against rods 33 to projectthe heads of adjusting screws 34 against pin 68. This position of theparts is that shown in Figs. 1 and 2. This action thrusts the ejector 66forwardly to the position shown in'Fig. 6] to place the pleated capsuleon the cone 503 At the beginning of the advancing stroke the roller 26again bears on the lower wall of the cam slot to again swing the arm tobring the cone carrying the pleated capsule in line with a constant ortimed air blast from aperture 53 which I dislodges the capsule anddirects it, closed end first, into tube 24. The successive capsules fallfrom the lower end of tube 24 in this same orientation and are properlypositioned in the finishing dies 23.

Admission of air to the cylinder 39 from the valve 42 is substantiallyinstantaneous, and immediately after actuation of the knockout dc-,vice, the ejector 65 and rods 33 are retracted by springs 70, which,however, may be dispensed with, as the same action would result,although at a later point in the cycle, by reason .of the stationarymounting of mandrel 5'6.-

It will be seen that throughout the travel of roller 26 in the straightportion of cam slot 44, the cone dwells at its lower position.Oscillation of the cone 59 into and out of the capsule receivingposition is controlled by travel of the roller in the curved portion ofthe slot or at the end of. the retracting stroke andat the beginning ofthe advancing stroke. Movement of the cone is accordingly relativelyrapid, and the action of the knockout assembly is timed to occur.

at substantially the instant of full retraction.-

vention is adaptable to 7 other manufactures "as: well, and will befound to be of advantage in any. manufacture of cup, shaped articles inmore than one operation. And although the invention-is oftmostpractical. value where such articles are thin walled or otherwisedelicate, it is not limited in that respect. Moreover variousmodifications of construction are contemplated within the invention,which is limited only as defined in the.

appended claims.

I claim: v 1. In apparatus ing openings therethrough and shaped to enterthe formed article,-means responsive to the re-- ciprocating movement ofsaid die to oscillate said member between a position coaxial with said;

die on retraction of said die and a withdrawn position onadvancement ofsaid die, and means coinciding with the withdrawn position of said.

member to direct an air blast into said member and outwardly through theopenings therein. .2; In apparatus :for forming cup shaped articlesincluding a reciprocating die, a member in the form of a hollowtruncated cone having openings in its walls, means responsive to therecip-- rocating movement of said die to oscillate said member :betweena position coaxial with said die on, retraction of said die andawithdrawn position on advancement of said die, and means,co-

for forming cup shaped arti-: cles including a reciprocating die, amember hav.

inciding with the Withdrawn position of said cone shaped member todirect an air blast into said cone shaped member and outwardly throughthe openings therein.

3. In apparatus for forming cup shaped articles including areciprocating die, a shaft arranged parallel to the direction ofmovement of the reciprocating die, a member in the form of a hollowtruncated cone having openings in its walls carried by said shaft andoffset therefrom, means responsive to the reciprocating movement tooscillate said shaft to place said member in position substantiallycoaxial with the die on retraction of the die and to withdraw it fromsaid position on advancement of the die, and means coinciding with thewithdrawn position of said cone shaped member to direct an air blastinto said cone shaped member and outwardly through the openings therein.

4. In apparatus for forming cup shaped articles including areciprocating female die having an independently movable ejector member,a shaft arranged parallel to the direction of movement of thereciprocating die, a member in the form of a hollow truncated conehaving openings through its wall carried by said shaft and offsettherefrom, means responsive to the reciprocating movement to oscillatesaid shaft to place said cone member in position substantially coaxialwith the die on retraction of the die and to withdraw it on advancementof the die, means actuated upon full retraction of the die to move theejector member re1ative to the die to dislodge an article from the die,and means coinciding with the withdrawn position of said cone member todirect an air blast into said cone member and through the openings inthe wall thereof to dislodge an article from said cone member.

5. In apparatus for forming cup shaped articles including areciprocating female die adapted to retain the formed article whilebeing retracted and an ejector member incorporated in the die andmovable independently thereof, a cylindrical cam arranged parallel tothe direction of movement of the die and having a slot in its wallincluding a relatively long straight portion and a relatively shortcurved portion at its rearward end, a shaft on said cam extending in thedirection of the advancing movement of the die, a member bearing in saidslot and reciprocating with the die, a member in the shape of a hollowtruncated cone having openings through its wall fixed relative to saidshaft and offset therefrom to present said cone shaped member inposition substantially coaxial with the die when said bearing member isin said curved slot portion, means actuated upon full retraction of thedie to move said ejector member relative to the die to dislodge anarticle therefrom, and means in line with the position of the coneshaped member when said bearing member is in said straight slot portionfor directing an air blast into said cone shaped member and through theopenings therein.

6. In apparatus for forming cup shaped articles including areciprocating assembly carrying a female die adapted to retain theformed article while being retracted and an ejector member incorporatedin the die and movable independently thereof, a cylindrical cam arrangedparallel to the direction of movement of the die and having a slot inits wall including a relatively long straight portion and a relativelyshort curved portion at its rearward end, a shaft on said cam extendingin the direction of the advancing movement of the die, a stud secured tosaid reciprocating assembly and carrying a roller bearing in said slot,a member in the shape of a hollow truncated cone having openings throughits wall carried by an arm fixed to said shaft to present said coneshaped member in position substantially coaxial with the die when theroller is in said curved slot portion, a pair of levers pivoted on saidreciprocating assembly, a pair of plun-gers slidably mounted on saidreciprocating assembly, pins on said ejector member in line with saidplungers, air actuated means to swing said levers against said rods tomove said ejector member relative to the die to dislodge an articletherefrom, a valve arranged to open on full retraction of thereciprocating assembly to admit air to said air actuated means, andmeans in line with the position of said cone shaped member when saidroller is in said straight slot portion for directing an air blast intosaid cone shaped member and through the openings therein to dislodge anarticle from said cone shaped member.

MAX M. KIPFER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

